meanwhile, the nato secretary general says the retreat of western forces from afghanistan could come sooner than expected, adding that their recent green- on-blue killings have been successful in sapping morale. turning to presidential politics, a judge rules whether to keep intact pennsylvania put the new law requiring voters to show photo id in the election. there is a supreme court order to will no later than today at 5:00 p.m., five weeks before voters go to the polls. homeland security is reporting that one border patrol agent has been killed and one wounded in an arizona shooting. we'll keep you updated. those are some of the latest headlines on c-span radio. >> when nation's chief in trade, and china has cheated, i will do something the president has not been willing to do, call them on the carpet and label them a currency manipulator. >> we brought more trade cases against china in one term in the previous administration did him in two, and we have been winning those cases >> wednesday, president obama and mitt romney need in their first presidential debate. watch and engage